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Finding the Fourth Proportional to 1,226,786.22, 1,692,846.24 and 904,669.74

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Solution

The fourth proportional to 1,226,786.22, 1,692,846.24 and 904,669.74 is: 1,248,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,786.22 : 1,692,846.24 = 904,669.74 : x
  2. Step 2: Convert to fraction form
    1,226,786.22/1,692,846.24 = 904,669.74/x
  3. Step 3: Cross multiply
    1,226,786.22x = 1,692,846.24 × 904,669.74
  4. Step 4: Simplify right side
    1,226,786.22x = 1,531,466,767,800.78
  5. Step 5: Solve for x
    x = 1,531,466,767,800.78/1,226,786.22
  6. Step 6: Final answer
    x = 1,248,356.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.